Shadow Void

Shadow Void is a alternate dimension that is accessible by numerous portals found throughout Roria for the 2017 Halloween Event from 13th to 31st October, 2017. This is where the player can find and encounter the Mythical Pokémon, Marshadow during the event.

Portals
In order to reach the Shadow Void, the player has to find the portals which appears randomly at several locations at sunset and lasts until dawn. They can be found on Lagoona Lake, Routes 9 to 12 and 15, as well as Cosmeos Valley. Stepping on a portal will flip the player's screen and sends the player to the Shadow Void.

Encountering Marshadow
Once the player reaches the Shadow Void, they will be located on a pillar. They have to walk across a short bridge to another pillar, and then stand still, looking away from where they came from. A shadow will appear from behind the player. Once they stand still for three seconds, eyes will appear from the shadow. Clicking the eyes will initiate the battle between Marshadow.